Machine for making paper boxes



June 7, 1932. CARLE 1,861,952

MACHINE FOR MAKING PAPER BOXES Original Filed April 27, '1923 2 Sheets-Sheet 1 7- 5. INV ENTOR ATTORNEY June 7, 1932.-

Original Filed April 27, 1923 H. CARLE MACHINE FOR MAKING PAPER BOXES 2 Sheets-Sheet 2 L Q MWW ATTORNEY Patented J'une 7, 1932 UNITED STATES PATENT cre ice HAROLD CABLE, OF BUFFALO, NEW YORK, ASSIGNOR T FQN. BURT COMPANY, LIMITED, 7

OF TORONTO, ONTARIO, CANADA, A CORPORATION OFONTAEIO MACHINE FOR MAKING PAPER BOXES Original application filed April 27, 1923, Serial No. 635,078. Divided and this application filed July 19,

1928. Serial No. 293,898. Renewed October 23, 1931.

This invention relates to the controlling and feeding of paper blanks and, with re spect to its more specific features, to the controlling and feeding of thin, soft, corner-cut blanks of paper in position for being applied to other objects, as for instance to another, and stronger and stiffer, paper blank.

One of the objects of the invention is the provision of a simple mechanism for supporting a pack of soft paper blanks and positioning the pack in such relation to the object to which the blanks in the pack are to be applied, that the blanks are removed one by one from one end of the pack as they are applied to the object, the succeeding blanks automatically flowing to removal position.

Another object of the invention is the provision of a practical mechanism for functioning apack of soft paper blanks so as to effectively applv them one by one to other paper blanks, which latter have liave been previously coated with adhesive to cause their attachment to the soft blanks.

Still another object of the invention is the provision of a practical and efficient blank magazine in which the blanks may advance to delivery position by free gravitative movement in the magazine and in which such free movement is checked, within limits, so as better to control the delivery of blanks one by one from the magazine.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the features of construction, combinations of elements, and arrangement of parts, which will be exemplified in the construction vhereinafter set forth and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawings, in which: 1 I

Figure 1 is a side elevation of a device embodying the invention;

Fig. 2 is a plan view ofthe magazine and certain operating instrumentalities appearing in Fig. 1

Fig. 3 is a view looking at the left of Fig. 1;

Figs. 4 and 5 are details of parts appear ing in Fig. 1, and

Fig. 6 is a diagrammatic view, including one of the cover-blanks'which may be utilized in the magazine, such blank being shown adhesively attached to a body blank.

This application is a division of application Serial No. 635,07 8, filed April 27, 1923, now Patent No. 1,698,136, to which reference is made for fuller disclosure of the specific operating instrumentalities with which the device herein disclosed is adapted more particularly to cooperate. In the present application it is sufficient to note that the numeral 1 indicates a rectangular former, or mandrel, carried at the end of an arm 2, the arm 2 being intermittently rotated in a horizontal plane as explained in the prior application. On the front face of the mandrel 1 is secured a body blank 3. As illustrated in Figs. '1 and6, body-blank 3 is a rectangular corner-cut paper blank of thick material. The cover blankt is a thin, soft sheet of paper which is adhesively attached to the bodyblank in the relative position indicated in Fig. 6', the ultimate object of the present invention being to secure the attachment of the two blanks together, as illustrated in Fig. 6. Sufficient of the machine of the prior application is herein illustrated for the purpose of a more ready understanding of the embodiment of the invention herein disclosed.

The numeral 5 indicates a table, or frame, of the machine. On a standard 6 fix'ed to the table is a horizontallyreciprocally shiftable carriage 7, supported for shift movement in r a guideway 8. To the underpart of the carriage 7 is pivoted the connecting rod 9', one end of this rod being connected to bell-crank lever 10 fulcrumed at 12 on the frame, said bell-crank lever being in turn actuated cam 13 on shaft 14:, through the instrumentality of the cam follower 15 operablyconnected to the arm 16 of the bell-crank lever, as described in the prior application. In

' the reciprocal movements of the carriage 7, the cam 13 shifts the carriage away from the.

mandrel 1, movement of the carriage toward the mandrel 1 being effected by the spring 17, one end of which is connected to the bellcrank lever 10 and the other to the frame 5.

In the present embodiment the blank magazine is of trough shape or U shape in cross section, and is composed of the opposite side walls 18 each having an inwardly extending flange 19, the two flanges constituting a blank slideway which supports the cover blanks 4, on edge, in a pack in the magazine, the slideways 19 also constituting the bottom of the magazine, in the embodiment illustrated. The carriage 7 reciprocates in' a generally horizontalplane, and the slideways 19 are inclined to the plane of shift of the magazine so that the blanks resting thereon will gravitatively move, or shift, along the slideways or rails 19. The slideways 19 extend to the rear of the magazine and their lower ends are continuous with front slideways 20 which are extensions of the rear slideways and are substantially parallel'to the plane of shift of the magazine.

InFig. 1- the'magazine is shown filled with thin cover blanks, or sheets-,Lthe blanks in the rear, that is on the inclined slideways, being. adapted gravitatively to slide down these ways and on to the front extensions which latter are in a substantially horizontal plane, so that the blanks on the extensions 20 are adapted to check the free gravitating movement'of the rear blanks on the inclined slideways 19. It will be seen that the entire magazine is shiftable in a substantially horizontal plane and that the slideways 19 are in a: plane intersecting the plane of shift of themagazine. so that the line of shift ofthe carriage 7, and the magazine, is generally transverse to the plane of the blanks in the magazine. Asthe magazine is shifted, conse quentf vibration tends to jog the blanks in the magazine so that they readily shift downwardly along the slideways 19 in case any sticking should occur.- The fore and aft movement of the magazine, which is in-a Iine' transverse to-the plane ofthe blanks,-assists As illustrated these fingers are short projections of resilient plates 22, the plates 22 being pinned to rigid plates 23 which latter are bolted or screwed to a front bracket 24' upstanding from the carriage 7. Penetrating "F the rigid plates 23 are the manually operable set screws 25, the inner ends of which are adapted to con tact the resilient plates 22. By manipulating the screws 25, theplates 22 may be flexed more or less so as to set the blank a retaining fingers in proper positiom'and so as to center the blanks 4 at the delivery end of the magazine.

There is a resilient plate 22 at each of 0pposite sides of the magazine, and each of these plates has two of the fingers or projections 21. These fingers project but slightly across the path of the blanks of the magazine.

The blank magazine is attached to the carriage 7 for simultaneous shift therewith, by devices which are adjustable to-hold the magazine at different distances from the carriage. As illustrated, the carriage 7 has upstanding rear brackets 26 fixed thereto. The rear brackets26 and the front brackets 24 each have slots as indicated at 27 and 28. The extensions 20 of the slideways 19 pass between the front brackets 24: and may be secured to the brackets at different elevations by means of the headed screws, or stems, 29 which pass through the slots 28 andenter the extensions 20. For securing the rear part of the magazine to the carriage 7, the plates 30 are fixed to the side walls 18 and depend into-overlapping relationwith the rear brackets 26. .For securing the plates 30 to the brackets 26, bolts 31 engaging the plates 30 and passing through the slots 27 may be employed.

In addition to having the fingers 21- on the resilient plates 22, as before explained, the front extensions 20 of the slideways also have similar blank retaining fingers as indicatedat 32.

Inoperation, it will be understood that the mandrel 1 will come to rest or beheld stationary opposite the magazine, as in Fig. 1, and that the body-blank 3 will be held on the end of the mandrel 1, having previously been coated with adhesive, so that application of the cover-blank, or sheet, 1, to the body-blank will cause the two to adhere together in the relation illustrated in Fig. 6.

As explained in the prior application, the body blank 3 may be held on the mandrel by a pneumatic gripper or suction device. The magazine will be filled with a pack of cover blanks 4, these blanks restingon edge of the rails, or slideways and filling. the magazine from the delivery end where the fingers 21 are located to sufficient of the rear vertically inclined part of the magazine to provide rear blanks resting on the inclined slideways 19, and adapted to gravitate downwardly so as to press and advance those blanks which lie on the front extensions 20.

Lateral portions of the advance blank in the magazine will be pressed forwardly against the fingers 21 and will be restrained from being delivered from the magazine. The central portion of the forward blank and those immediately behind it will be bulged forwardly slightly so that as the mag azine advances toward the body-blank 3, the bulged central portion will first be applied-to the adhesive coating on the body-blank 3.

Thereupon by further advance movement of the magazine, the entire surface of the forward cover blank will be pressed against the body blank, and it will be noticed that the adhesive attachment is effected from the center of the blanks outwardly by a sort of wip ing action, so that air bubbles are not apt to form between the two blanks and any air bubbles that may ensue are wiped or squeezed out. It will be also noted that the fingers 21 and 82 are outside the margin of the mandrel 1, so that practically complete pressure attachment of the cover blank and body blank may be effected without the mandrel 1 interfering with the advance movement of the magazine. After the attachment of the advance blank, the magazine recedes, but the foremost blank is pulled from between the retaining fingers and remains on the cover blank.

Thereupon, as explained in the prior application, a body-blank 3, on another mandrel, will arrive at position, as in Fig. 1, whereupon repetition of the magazine movements above explained will result in the application of the next blank in the magazine to the new body blanks and so on Having described my invention what I claim as new and desire to secure by Letters Patent, is:

1. In a device of the character described. in combination, a reciprocally shiftable blank magazine having front and rear blank slideways inclined to each other.

2. In a device of the character described, in combination, av reciprocally shiftable blank magazine having front and rear blank slideways, the front slideway being substantially parallel to the plane of shift of the magazine and the rear slideway being inclined to said plane, said slideways being continuous with each other.

3. In a device of the character described, in combination. a blank magazine shiftable in a substantially horizontal plane and having a blank slideway in a plane intersecting the plane of shift of said magazine.

4. In a device of the character described, in combination. a blank magazine shiftable in a substantially horizontal plane and having a rear blank slideway in a plane intersecting the plane of shift of said magazine, and a front blank slideway in a plane parallel to that of shift of the magazine.

5. In a device of the character described. in combination. a'blank magazine shiftable in a substantially horizontal plane and having a blank slideway in a plane intersecting the plane of shift of said magazine, and a plurality of blank retaining fingers resiliently supported at the delivery end of the magazine.

6. In a device of the character described, in combination a blank magazine having a slideway for the blanks therein, a horizontally, reciprocally shiftable carriage, and

means attaching said'magazine to said carriage forshift with the latter, said means said carriage, slotsin said brackets, a blankmagazine, threaded stems in the slotsgof said front brackets for. securing-said magazine to the front brackets, plates on said magazine depending into overlapping relation to said rear brackets, and bolts securing said plates to said rear brackets and entering said slots.

8. In a device of the character described, in combination, a carriage shiftable back and forth, front and rear upstanding brackets on saidcarriage, slots in said brackets, a blank magazine, threaded stems in the slots of said front brackets for securing said magazine to the front brackets, plates on said magazine depending into overlapping relation to said rear brackets, and boltssecuring said plates to said rear brackets and entering said slots, said magazine including a vertically inclined, rear, blank slideway having a horizontal'extension projecting in: front of said front brackets. i

9. In a'device of the character described, in combination, a carriage shiftable back and forth, front and rear upstanding brackets on said carriage, slots in said brackets, a blank magazine, threaded stems in the slots of said front brackets for securingsaid magazine torthe front brackets, plates on said magazine depending into overlapping relation to said rear brackets, bolts securing said plates to said rear brackets and entering said slots, said magazine including a vertically inclined, rear, blank slideway having a horizontal extension projecting in front of said front brackets, rigid plates supported by said front brackets, resilient plates supported alongside said rigid plates and having fingers extending into the path of the blanks in the magazine, and set-screws carried by said rigid platesfor flexing said resilient plates.

10. In a device of the character described, in combination, a blank magazine including a pair of vertically inclined slide rails along which the blanks in the magazine are adapted gravitatively to move, said rails having substantially horizontal continuous extensions, a pair of resilient plates having blank retaining fingers projecting into the path of the blanks above said extensions, and means including set-screws, one for each resilient plate, adapted to flex said resilient plates toward and from each other. 7

11. In a device of the character described, in combination, a blank magazine having a blank slideway so disposed that blanks in the magazine gravitatively shift along said slideway, means: adapted reciprocally to move said magazine in a; line generally transverse to: the plane of the blanks in the magazine, and blank retaining fingers: in the path of the blanks at the delivery end of themagazine, said slideway including front extensions so disposed as: to support forward blanksin position to check free gravitation movement of those in: the rear.

12. In a machine of the character described, in combination, a magazine for paper blanks, and. having front and rear blank slideways inclined to each other and fingers upon said magazine adapted to engage said blanks at the ends thereof, and means to reciprocate said magazine.

13. In a machine of the character described, in combination, a magazine for blanks, and having front and rear blank slideways inclined toeach other and fingers adapted to engage opposite edges of said. blanks torestrain the movement thereof, and means for supporting said magazine in such position as to cause said blanks to be urged against said fingers.

1 1 In amachine of the character described, inv combination, means for support ing a box blank, a magazine for paper blanks, and having front and rear blank slideways inclined to each other and fingers upon said magazine for engaging the opposite edges of a paper blank for retaining the same'in positionmeans for supporting said magazine, and means for moving said magazine and said box blank relatively toward each. other to cause said paper blanks to contact with said box blanks.

In testimony whereof I afiix my signature.

HAROLD GARLE. 

